that could well have saved the life of sean collier, the mit police officer was gunned down thursday night by the fleeing bomb suspects, had the suspects in the boston bombings killed by slipping poison into a bottle or lacing spinach with a deadly chemical, it would have only taken minutes to identify where the food was manufactured and how it moved through the food chain. it would have narrowed the search but not anything to do with guns or gunpowders or explosives. that would be crazy to regulate that. >> you have a right to bear bombs. >> stephanie: that would be regulating like how much fertilizer you're allowed to have. looky here. fertilizer plant had 1,350 times the amount of explosives it should have it. >> no wondter went kaboom. >> it hadn't been checked into since 1985. >> great zoning there, too right next to a nursing home. >> and an elementary school. >> stephanie: it was supposed to have less than 400 pounds of nitrate. it is the threshold where the plant would have to inform the department of homeland security about the. a es employeesives. they didn't know it existe